Improved window-sash supporter



UNITED STATES PATENT OFFICE.

JOHN Gr. PERRY, OF SOUTH KINGSTON, RHODE ISLAND.

Specification forming part of Letters Patent No. 415,747, dated January 3, 1865.

.'Z'o all whom t may concern Be it known that I, Jol-IN G. PERRY, of South Kingston, in the county of Vashington,in the State of Rhode Island, have i11- vented a new and Improved Window-Sash Supporter; and I do hereby declare that the followingis afull and correct description thereot', reference being had to the accompanying drawing, forming part of this sl'neeitication, and to the letters of reference marked thereon.

'lhe drawing represents a section of a sash, O, part of which is removed to show the construction of the supporter, which is as follows A lever, A, is placed on a pivot, S, and has one end, E, curved in an evolute form, the other end being carried out long enough to reach through the side ofthe sash and be operated upon. Another lever, shaped like the first, except that it has no long end to operate it by, is placed in an inverted position above the tirst one and moms on a pivot at t. A shoulder, o, or projection on the under side ot' the upper lever rests against a. like projection, o, on the upper side of the lower lever, which keeps the upper one in place. These two levers are put into a mortise in the side ofthe sash, and the pins on which they turn put directly through through the wood, or they may be putin a metallic frame, G, as represented in the drawing, and this frame secured in the mortise.

The operation is as follows: The two longest parts of the levers tend, by their weight, to bring the two curved ends ofthe levers together and so as to project out against the window-frame F, and when an attemptis made to move the sash up or down one or the other of the curved cam-shaped ends of the levers is made, by the friction on the window-frame, to press so hard against the frame as to prevent the sash from moving, the lower lever preventing the sash from moving down and the upper one t'rom moving up. By raising the long end A ot' the lower lever the two curved ends D E of the levers will loe moved away from each other and drawn back from the trame, so that the sash can be moved up and down at pleasure.

The upper lever is moved by the projection c, which presses against the shoulder o on the upper lever, B. As before stated, the weight otl the longest arms of the levers will keep them in the right position when rightly constructed, but a spring may be added either between the two curved arms or above thelongest arms of either lever, or apiece of metal plate forming a sort of shoe may be put over the face of each cam to protect the window-frame, and the pieces or shoes connected together by a piece ot' india rubber or other spring to assist in closing the levers.

Having thus described my window-sash supporter, I cla-im- The combination of the two cains or curved levers with the projections o c, constructed substantially as herein described, and for the purpose set forth.

JOHN G. PERRY.

Witnesses:

E. (Y). CLARKE, O. H. PERRY. 

